:root {
  --utrecht-red: #cc2229;
  --utrecht-red-dark: #a81a20;
  --bitcoin-orange: #f7931a;
  --ink: #111;
  --paper: #ffffff;
  --muted: #5c5c5c;
  --border: #ececec;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Inter, Roboto,
    Helvetica, Arial, sans-serif;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--utrecht-red); }

.site-header {
  display: flex;
  justify-content: flex-end;
  padding: 16px 24px;
}

.lang-toggle {
  display: inline-flex;
  border: 1px solid var(--border);
  border-radius: 999px;
  overflow: hidden;
  background: #fff;
}

.lang-toggle button {
  appearance: none;
  border: 0;
  background: transparent;
  padding: 6px 14px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.05em;
  color: var(--muted);
  cursor: pointer;
}

.lang-toggle button.active {
  background: var(--utrecht-red);
  color: #fff;
}

.container {
  max-width: 680px;
  margin: 0 auto;
  padding: 32px 24px 64px;
  text-align: center;
}

.logo {
  display: block;
  margin: 16px auto 28px;
  width: 240px;
  height: 240px;
  max-width: 60vw;
  max-height: 60vw;
  border-radius: 12px;
}

h1 {
  font-size: clamp(2rem, 5vw, 2.75rem);
  font-weight: 800;
  letter-spacing: -0.01em;
  margin: 0 0 8px;
  text-transform: uppercase;
}

.tagline {
  font-size: 1.125rem;
  color: var(--muted);
  margin: 0 0 24px;
}

.intro {
  max-width: 520px;
  margin: 0 auto 36px;
  color: #333;
}

.links {
  display: flex;
  flex-direction: column;
  gap: 12px;
  max-width: 360px;
  margin: 0 auto;
}

.btn {
  display: inline-block;
  padding: 14px 20px;
  border-radius: 10px;
  text-decoration: none;
  font-weight: 600;
  background: #fff;
  color: var(--ink);
  border: 1px solid var(--border);
  transition: transform 0.05s ease, border-color 0.15s ease, background 0.15s ease;
}

.btn:hover {
  border-color: var(--utrecht-red);
  color: var(--utrecht-red);
}

.btn:active { transform: translateY(1px); }

.btn-primary {
  background: var(--utrecht-red);
  border-color: var(--utrecht-red);
  color: #fff;
}

.btn-primary:hover {
  background: var(--utrecht-red-dark);
  border-color: var(--utrecht-red-dark);
  color: #fff;
}

.site-footer {
  padding: 24px;
  text-align: center;
  color: var(--muted);
  font-size: 0.875rem;
  border-top: 1px solid var(--border);
}

@media (prefers-color-scheme: dark) {
  :root {
    --paper: #0f0f0f;
    --ink: #f5f5f5;
    --muted: #a0a0a0;
    --border: #242424;
  }
  .btn { background: #191919; color: var(--ink); }
  .lang-toggle { background: #191919; }
  .intro { color: #ccc; }
}